Results 101 to 110 of about 239 (145)

The anomalous dust tail of comet P/Tempel 2

Monthly Notices of the Royal Astronomical Society, 1984
La queue etroite de poussiere de la comete P/Tempel 2, observee par le satellite IRAS, est le resultat d'emissions a faible vitesse de particules larges. L'analyse dynamique des particules de poussiere sous l'influence de la pression de radiation solaire indique que certaines de ces emissions peuvent avoir eu lieu au moins 1500 jours avant les ...
N. Eaton, J. K. Davies, S. F. Green
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Plasma Tail and Dust Tail of Comets

1994
Generally, a comet has two tails; the blue plasma tail and the red dust tail (or Type 1 (ion) tail and Type 2 (dust) tail). The plasma tail is caused by an interaction between the solar wind and the cometary plasma, while the dust tail is by the solar radiation pressure to the cometary dust. The first purpose of the present paper is to review our works
Takao Saito, Yukio Kozuka, Keiji Saito, Shigeyuki Minami   +3 more
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Dust tail streamers of a comet with rotating nucleus

Astrophysics and Space Science, 1992
Synthetic images of the dust tail are presented for a comet which has a rotating nucleus with one predominant dust source fixed to it. The images have been generated using a new computer model which, unlike similar models, allows for the study of dust tails caused by a rotating nucleus with an anisotropic distribution of sources.
Klaus Beisser, Horst Drechsel
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On the Dust Tail of Comet Austin 1989c1

Publications of the Astronomical Society of Japan, 1990
Abstract A peculiar dust tail of Comet Austin 1989c1 was observed before its perihelion passage. A theoretical calculation indicates that the tail comprises large particles of millimeter-submillimeter size. The calculation also shows that these particles were ejected from ~ 1000 d before its perihelion passage.
Jun-ichi Watanabe, Mitsunori Tsumura, Ken Sugawara   +2 more
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The Dust Tail of Comet Bradfield 1987XXIX

1990
In this paper the reduction and the analysis of two images comcerning the dust tail of Comet Bradfield 1987XXIX are discussed. The plates (CRT7 + W16) were obtained by means of a 20/25/50 cm Schmidt camera. The adopted emulsion and filter combination (pass band 520–570 nm) approximates the standard V photometric system, thus dropping most of the plasma
M. Fulle, G. Cremonese, A. Cimatti
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Model analysis of the dust tail of comet Hale-Bopp

Kinematics and Physics of Celestial Bodies, 2009
The paper presents the results of dynamic simulation for the dust tail formation of comet C/1995 O1 (Hale-Bopp). To simulate the dust tail, the trajectories of 2 × 106 dust particles were traced. The sizes, ejection moments, outflow directions and velocities of the dust particles were defined by the Monte Carlo algorithm. The obtained three-dimensional
S. V. Kharchuk, P. P. Korsun, H. Mikuz
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Propagating inhomogeneities in the dust tail of comet West 1975

Nature, 1978
COMET West has displayed some remarkable properties. Sekanina1 has studied the multiple splitting of its nucleus and also discussed the strange structure of its dust tail. This tail is characterised by a system of bright bands which do not correspond to the true synchronous band2 and which are shown by very few comets.
SERGE KOUTCHMY, PHILIPPE LAMY
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The Dynamics of Charged Dust in the Tail of Comet Giacobini-Zinner

Journal of Geophysical Research: Space Physics, 1986
A numerical simulation has been performed to calculate the distributions of dust particles of various sizes down the tail of comet P/Giacobini‐Zinner. When the electrostatic charging of the grains in the plasma and radiative environment of the comet is taken into account, it is found that the distribution of the grains (particularly at the lowest end ...
M. Horanyi, D. A. Mendis
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Dust emission structure in comets with type II tails

Astrophysics and Space Science, 1974
Short exposure plates of Comet Arend-Roland (1956h) are examined and compared with similar photographs of Comet Bennett (1969i), Comet Halley (1910 II) and Comet Mrkos (1957d). It is found that the emission structure of the dust near the nucleus in the first comet is different from that in the others, although in all cases we have the formation of ...
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Model of the dust tail of comet C/2011 L4 (PANSTARRS)

Kinematics and Physics of Celestial Bodies, 2015
Results of dynamic modeling of the dust tail formation for the comet C/2011 L4 (PANSTARRS) are presented. To simulate the dust tail, the trajectories of 100 million dust particles were traced. Their sizes, ejection moments, outflow directions, and initial velocities were defined by the Monte Carlo algorithm.
S. V. Kharchuk, P. P. Korsun
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